It’s a terrible idea and creates more problems than it solves.

You eliminate the good and the bad ideas. You eliminate the good ideas that are simple “bad” because it upsets people with power. You eliminate the good ideas that are “bad” simply because they are deemed too far out the Overton window.

And worst of all, it requires some benevolent force to make the call between good and bad, which attracts all sorts of psychopaths hungry for power.